Respiratory system

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Across
  1. 1. looks like small clusters of grapes
  2. 4. stopes trachea from collapsing
  3. 6. alveoli is made of this epithelium cell
  4. 7. breathing in
  5. 9. muscles between rubes
  6. 10. a piece of cartilage acts like a lid over the larynx
Down
  1. 2. these are spongy tissues filled with alveoli, blood vessels and nerves
  2. 3. is produced in the goblet cells
  3. 5. infection of voice box
  4. 8. chest cavity enclosed by ribcage